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PilotLPTM [1.2K]
4 years ago
6

PLEASE HELP!!

Physics
1 answer:
Gala2k [10]4 years ago
4 0
Potential energy is stored energy due to your position. If comparing yourself to the ground (aka bottom of the hill), the higher you are, the higher the potential energy. Kinetic energy is energy due to motion. 

That means at the top of the hill, you have the most potential energy and little/no kinetic energy, depending on if you started moving yet. If you're still at  the top of the hill and not moving, you have zero kinetic energy. As you go down the hill, your potential energy decreases as it gets converted to kinetic energy. Once you're at the bottom of the hill, you should have the most kinetic energy and no potential energy because most of that energy was converted to kinetic energy.

Friction would decrease the amount of potential energy converted to kinetic energy because some of that energy would have been lost to friction, which moves in the opposite direction of your direction of motion. That means your speed at the bottom of the hill would be slower than if there was no friction present. That's the reason why you don't go flying off a slide when you get to the bottom, for example!
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3 years ago
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1. Dos puntos A y B están separados en línea recta 1475 m. Por el punto A pasa hacia el punto B un móvil con una velocidad de 15
ikadub [295]

Answer:

a) 35 sequndos   b) M1 = 600m   M2 = 875m

Explanation:

a)

Antes de que el otro móvil comience a moverse, el primer móvil ha viajado 5 segundos a una velocidad de 15 m / s.

5 segundos x 15 m / s = 75 metros.

Podemos establecer una ecuación con la información que conocemos. Juntos, en total, los dos recorren 1475 metros.

Voy a representar el tiempo como t. Un móvil ya ha recorrido 75 metros y hará otros 15 t. El otro aún no se ha movido y viajará 25t. Esos tres números se sumarán a 1475.

75 + 15t + 25t = 1475.

Resta 75 de ambos lados y suma términos similares de t: 40t = 1400

t = 35 segundos.

b)

Ahora tome la distancia recorrida por cada vehículo por separado y conecte 35 segundos para t.

Primer móvil: 75 + 15t = 75 + 15 (35) = 600m

Segundo móvil: 25t = 25 (35) = 875m

Usé un traductor para entender la pregunta y luego traduje lo que escribí. Lo siento si mi explicación no es clara.

6 0
4 years ago
An elephant pushes with 2000 N on a load of trees. It then pushes these trees for 150 m. How much work did the elephant d
LiRa [457]

Answer:

300000

Explanation:

2000×150= 300000

6 0
3 years ago
The diameter of a 12-gauge copper wire is 0.081 in. The maximum safe current it can 17) carry (in order to prevent fire danger i
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Answer:

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Explanation:

drift velocity=I/nAq

diameter 12 gauge

wire=0.081inches=0.081*2.5=0.2025cm radius=0.10125cm area=pi*R^2 =20/8.5*10^22*3.14*0.10125^2*10^-4*1.6*10^-19*

V = 0.44m/s

6 0
4 years ago
the andromeda galaxy is approaching our galaxy with a radial velocity of 120 km/s. given the galaxies present separation of 800
Nookie1986 [14]

The andromeda galaxy is approaching our galaxy with a radial velocity of 120 km/s. given the galaxies present separation of 800 kpc, and neglecting both the transverse component of the velocity and the effect of gravity in accelerating the motion, estimate when the two galaxies will collide.

The Andromeda Galaxy, also known as Messier 31, M31, or NGC 224 and originally the Andromeda Nebula, is a barred spiral galaxy that is 2.5 million light-years away from Earth and the closest big galaxy to the Milky Way. It has a diameter of roughly 46.56 kiloparsecs.

The Milky Way, which houses the Solar System and Earth, and the Andromeda Galaxy are anticipated to collide in roughly 4.5 billion years. This galactic collision will take place between the two largest galaxies in the Local Group. The Andromeda galaxy is the brightest galaxy outside of our solar system. It is the furthest object that the majority of us humans can see with our unaided eyes at a distance of 2.5 million light-years.

To learn more about Andromeda galaxy please visit-
brainly.com/question/14494804
#SPJ4

4 0
2 years ago
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